Posted 1/14/2013 10:01 AM (GMT -6)
After my first colonoscopy, when I followed the prep instructions diligently--and wound up having to be carried into the facility after spending the night projectile vomiting--I realized that there were ways in which I could handle the prep. I've never had any problems since. (Like you, I have pretty much perpetual diarrhea, too.)
1. Go on clear liquids (or eat extremely lightly) for 48 hours before the procedure, instead of the prescribed 24. By the time you start the prep, you have pretty much nothing left in your system already.
2. Listen to your body. Drink the prep, but only until your body starts sending you signals that you've had enough. Since that first time, I've only done a quarter to half of the required dose. No doctor has ever complained that there was anything left in my colon.
3. After that first time, I've always told my doctors that I prefer not to take any laxative pills that they prescribe as an addition to the liquid prep. Without exception, my doctors have agreed that I shouldn't take the post-liquid laxative pills. I've never taken them again--and again, no doctor has ever complained.
4. Compared to the prep, the procedure is a cinch. But you may want to check with the doctor to make sure that they're going to knock you out. For my first colonoscopy, I was sedated but awake--and it was seriously uncomfortable.
Whatever you do, don't cancel the procedure! It's a vital diagnostic tool. Hang in! You'll be OK.